a:4:{i:0;a:2:{s:4:"name";s:5:"Type:";s:3:"val";s:18:"electro-stimulator";}i:1;a:2:{s:4:"name";s:31:"Type of electrical stimulation:";s:3:"val";s:4:"TENS";}i:2;a:2:{s:4:"name";s:11:"Ergonomics:";s:3:"val";s:9:"hand-held";}i:3;a:2:{s:4:"name";s:19:"Number of channels:";s:3:"val";s:9:"2-channel";}}